Hoisting apparatus



May l5, w23.

G. G. LENDI HOI STING APPARATUS Filed June 25, 1920 3 Sheets-Sheet l May l5, H923.

Filed June 25, 1920l BASZM G. G. LENDI HoIsTING APPARATUS 3 Sheets-Sheet 2 May 5, 1923.

G.G.LEND| HoIsTING APPARATUS Fifqed June 25, 1920 3 sheets-sheet 5 mw 0 Z/ /H//M/w Patented May 15, 1923.

parte STATES HASM GEORGE G. LENDI, 0F BROOKLYN, NEW YORK.

HOISTING APPARATUS.

Application tiled June 25, 1920. Serial No. 391,666.

To all whom t may concern:

Be it known that I, GEORGE G. LENDI, a citizen of the United States, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification.

This invention relates to improvements in hoisting apparatus. The object of the invention is to provide a generally improved hoisting apparatus for hoisting and!y dumping at different levels Vmaterials loaded in or carried in a suitable carrier of any approved type. Besides the `object of providing a generally improved hoisting apparatus, it is a further object of the invention to provide certain novel and improved features of construction and operation tending to simplify and reduce the necessary number of parts and whereby the installation of hoisting apparatus may be accomplished more easily than is the case with several types of hoists known to the art, and whereby the operation of the hoist may be facilitated and carried on with certainty, ease and greater eiiicienoy.

In thefollowing specification the several features of my invention will be clearly pointed out and their operation explained with more particular reference to the accompanying drawings illustrating the preferred form of my invention.

In the said drawings only so much is illustrated as is necessary for a complete understanding of the invention and many details known to the art have been omitted for the sake of clearness. In the said drawings:

Fig. 1 is a view in side elevation of a hoisting apparatus embodying my invention wizh parts shown in section and parts omitte Fig. 2 is a. view at right angles to the viewshown in Figure 1 and looking in the direction of arrow 2 in Figure 1.

Fig. 3 is a horizontal sectional view taken substantially on the line 3-3 of Figure 1.

Fig. 4 is a view somewhat similar to Figure 1 but'shows a modification thereof.

Fig. 5 is a. sectional view taken substantially on the line 5 5 of Figure 4.

Fig. 6. is a view similar to the views in Figures 1 and 4 but illustrates a still further modification in the construction and operation of the device.

Fig. 7 is a fragmentary View of the hoisting carrier and adjacent parts looking in the direction of arrow 7 in Figure 6.

Fig. 8 is a detail View showing a modification.

Referring to Figures 1, 2 and 3 the reference numeral 10 denotes a hoisting hatchway or shaft in which it is desired to hoist material from the bottom thereof and to the hatcliway opening indicated at 11, 11 for the purpose of dumping the material through such opening. The bottom of the hatchway 10 and the arrangements there for loading the carrier in this case a bucket 12, are not shown as they form no part of this invention and may be of any approved type and construction.

Extending from the bottom of the hatchway and to a 'point adjacent the dumping level -11 is a main guide 13 in the form of a T-rail as shown, see Fig. 3. The main guide may be in the form of a rail of any suitable cross section, or it may be a rope or cable. There is a main guide member 13 on each side of the hatch as shown.

In continuation of the main guides 18 and preferably slightly overlapping them, there is provided on each side of the hatchway a pair of dumping guide rails 14, 14 which form a dumping guide track on each side and which extends upward to a point indicated at 15 beyond which the carrier is not designed or arranged to be lifted and which point is at a higher level than the normally highest point of operation of the carrier into dumping position.

The numerals 16, 16 denote dumping rails which extend from a point 17 inside the hatchway and upwards through the dumping opening 11 and laterally away from the latter outside the hatchway as shown. The lowermost point 17 of the dumping rails is lower than the lowermost point 18 of the track 14.

Again, the dumping rails are in alinement with or in the planes of the main guides or rails 13 as seen in Figure 3.

The carrier 12 is operated by means of suitable hoisting machinery (not shown), the power being applied to a cable 20 attached to a sling or bail 21 in which said carrier is pivoted at 22. LThe said cable 20 provided on the carrier a plurality of sets of rolls, which for purposes of identication `anal explanation may be termed upper guide rollers 24, 24; lower guide rollers 25, 25; steering rollers26, 26, and dumping rollers 27, 27. The names of these several rollers are wholly arbitrary. The lower guide roller 25 andv the dumping roller 27 may be integral as shown.`

The carrier is so designed and the said rollers and the pivot at 22 so arranged that during the travel up and down in the shaft or hatchway, the center of gravity of the carrier is near or about at the point marked It follows, therefore, that as the carrier is lifted, the upper guide rollers 24 are forced into contact with the inner guides 13 on the one side thereof, while the lower guide rollers 25 are forced into contact with said guides on Athe opposite side thereof: That is, there results a tilting movement ot the carrier with reference to the guide 13 and consequently the carrier remains locked to the guides during its travel. It will be observed that the carrier is free to tilt around the pivot 22. Thus the guiding of the carrier is elastic as it were, in that the carrier will closely hug the main guides 13 and does not depend upon the exact thickness, spacing, smoothness or shape of the main guides, such as is the case where dependence is placed upon rollers travelling between double rails, or where guide shoes or similar means are used.

As the carrier approaches the dumping level at 11, the steering rollers 26 engage the dumping rails 16, 16 which forces said rollers against the main guides 13 whereby the carrier is tilted or moved so that the upper guide rollers 24 are forced away from contact with the guides 13. The steering rollers 26 then run between the main guides 13 and the dumping rails 16 until the carrier has been lifted so high that the main guides are no longer in the way of the upper steering rollers 24. The carrier has now entered dumping position and ,as the upward movement continues, the lower guide rollers 25 engage the dumping rails 16 as shown and run between them and the main guides 13. Continuing its upward travel the carrier is tilted forwardly into dumping posi'- tion in that the steering rollers 26 follow t the dumping rails 16. after which the dump- -ing rollers 27 enter the trac-k 14 and the carrier is then dumped outward through the opening 11, turning around the centers of said dumping rollers. The position of the carrier at 100 illustrates the parts as they appear during the upward straight travel.

At 200 the carrier is shown in the position when the rollers have engaged the dumping I outwardly around the rollers 27. This tendency is, however, counter-acted by gravity which tends to swing the carrier into the hatchway. These tendencies, or moments, are nearly equalized and, result in a nearly 'straight upward movement of the carrier guided by the dumping rollers 27.

On lowering, the carrier is first run outwardly'on the dumping rails 16 after which it is turned and lowered, the several rollers engaging the several said rails in the reverse order of that described in the foregoing.

'It will be seen that during they entire operation the carrier has been carefully guided and is never out of control. On the other hand, very simple means are employed to accomplish the operation and there is no danger of the rollers catching or the carrier becoming jammed in the guides.

Referring now to Figures 4 and 5 the carrier 12 is guided during its travel in the hatchway 10 by three rollers on each side which run on the main guide rails 13, while the carrier is suspended as above stated in a sling 21 pivoted at 22 to one side of the center of gravity of the carrier, so that also in this instance the carrier is locked against the guides during its travel. The upper guide rollers 34, 34 are located between the lower guide 'rollers 35, 35 and the steering rollers 36, 36. The lower guide rollers are.

wide enough to run both on the main guides 13 and the dumping guide rails 37, 37, one of which is longer than the other.

During the upward travel the carrier is guided and locked against the main guides 13 by the rollers engaging the same as shown. The carrier travels in this position until the steering rollers engage the dumping rails 16 whereby the upper guide rollers are moved away from the guides 13. At this time, however, the dumping rollers 35 have In Figure 4 the one rail 37 is a continuation of the main guides 13 to allow the rollers to ride on both. The constructions described in the foregoing permit dumping at only one fixed le'vel.

In Figures 6,'7 and 8 there is disclosed a structure which will permit dumping at different levels.

"i" ity of dumping openings 52 (only one is shown) and in said openings there is provided a switch comprisinga dumping rail 53, a guide rail 54 and a switch roller 55, all

5G. The construction is of course the same on both sides of the hatchway 1Q. The carrier is provided with a vdumping cam 58 which is secured to the carrier by any suitable means.

The main guide rails extend the entire length of the hatchway. O pposite each dumping opening there is provided dumping guide rails 70 which extends from a suitable point 71 below the dumping level at 52- to another suitable point 72 at a level high enough to guide the dumping rollers 57 while the carrier is being dumped.

If it is desired to dump the carrier at the' level 52, the switch is turned into operative position as shown in full lines. The switch rails are of course in line with the guides 13 as shown in Figure 7. As the carrier enters the dumping positionthe steering rollers 51 enter t-he switch and the carrier will then be turned around the pivot 22 in that the steering rollers are compelled to follow the switch. By the time the dumping roller 57 has been lifted to dotted position 577, the steering roller 51 has passed out of the switch track 53-54 and the cam 58 is running under and against the switch roller as indicated at 77. By the time th cam has cleared the switch roller, the center of gravitv has been moved so that the carrier can no loinger fall back into the hatchway but must continue to move into its extreme outward position, which is indicated by the respective will be lifted a short distance but as the cam slides against the roller 55, the carrier cannot fall' back intotlie hatehwuy. lVheii the dumping is completed the carrier is lowered bya movement in the reverse direction. If it is not desired to dump at level 52, the switch is swung outward into the dotted p0- sition and the carrier will be lifted to a higher level. i

F ig. 8 illustrates a modification in which the carrier is pivoted at 80 to a carriage 8l having wheels 82 which are pulled against i the main guides 13 on the one side while gravity will keep the steering roller in contact with the main guide on the other side thereof. The switch 84 is indicated in out-- -line only and may be fixed or movable. The

operation is the same as for Figure 6.

It will be noted that the foregoing disclose in all cases a carrier guided along a 85 single track by a tilting movement around the carriers point of suspension in the sling whereby the carrier is securely guided and of which is pivoted at a suitable point as at locked against the main guides. l Also that overriding cannot cause the carrier to fall back into the hatchway or get jammed. It is also a feature of the invention that the .suspension'ot the carrier in the sling or bail is outside the center of gravity. It will further be understood that while I have disclosed my invention in its preferred form, changes and alterations may be made in the detailed arrangement and construction, without departing from the principle of the invent-ion or the scope of the appended claims.

I claim:

1. The combination of a main guide, a carrier, rollers on said carrier adapted to engage the said main guide on opposite sides thereof, lifting means for said carrier and means for pivoting the carrier in said lifting means to cause the said rollers to automatically engage the said main guide on the opposite sides thereof.

2. The combination of a main guide, a carrier, a plurality of pairs of rollers on said carrier adapted to engage the said main guide on opposite sides thereof while the said carrier travels on said guide, lifting 115 means for said carrier` means for pivoting the carrier in said lifting means to cause the said pairs of rollers to automatically engage the said main guide as aforesaid. and mechanism for automatically releasing one 120 of the said pairs of rollers from engagement with said main guide when the said carrier has been lifted to a predetermined position.

3. The combination ofa main guide, a carrier, a plurality of pairs of rollers on said 125 carrier and adapted to engage said main guide, lifting means for the latter, means for pivoting said carrier on. said lifting means to cause the said rollers to automatically engage. said main guide during the 130 travel of the carrier, dumping rails, dumping guide rails for guiding the carrier into dumping position on said dun'iplng rails, and means on said carrier for releasing one of the said pairs of rollers from engagement with the said main guide preparatory to move said carrier into dumping position on said dumping rails.

4. The combination with a hatchway hayinv a discharge opening, of a mam guide 1n said hatchway extending from the bottom thereof and to the said discharge opening, a carrier` two upper and two lower gulde rollers on said carrier, said rollers being adapted to engage said main guide on opposite sides thereof, lifting means for the carrier, means for pivot-ing the carrier on said lifting means to cause said guide rollers to automatically engage said main guide on opposite sides thereof, dumping rails 1n said discharge opening, dumping guide rails extending from the lower level of said discharge opening to the highest level at which said carrier is adapted to 'he operated. means on said carrier adapted to engage said dumping rails and said main guide for disengaging said upper rollers from the said main guide, s aid last named means serving also as supporting means for the said carrier while the carrier is being dumped and means on the carrier adapted to engage the said dumping guide rails for operating said carrier into dumping position.

5. The combination with a hatohway having a discharge opening, of a main guide, a carrier, rollers on said carrier adapted to engage said main guide on -opposite sides thereof, lifting means, means for pivoting said carrier on said lifting means to cause the said rollers to engage the said main guides on opposite sides thereof, a switch for causing said carrier to be operated through saiddischarge opening and into dumping position on said switch which latter is operable into and out of operative relationship with the main guide.

6. The combination with a hatchway having a discharge opening, of a main guide, a carrier, upper and lower rollers positioned on said `carrier so as to engage said main guide on the opposite sides thereof, liftingr means, means ,for pivoting said carrier on said lifting means to cause said rollers to automatically' engage said main guide on opposite sides thereof, a switch for causing said carrier to be operated into dumping position through the said discharge opening, a guiding roller on said switch, cams on said carrier adapted to engage said guiding roller when the said carrier has been operated into a given position, guiding rails in said hatchway for guiding the said lower rollers to operate said carrier into dumping position.

.Signed at New York, in the county of New York and State of New York this 23rd day of June A. D. 1920.

GEORGE G. LENDI. 

